28024315 has 16 divisors (see below), whose sum is σ = 37292256. Its totient is φ = 20044800.

The previous prime is 28024301. The next prime is 28024319. The reversal of 28024315 is 51342082.

It is not a de Polignac number, because 28024315 - 2¹³ = 28016123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28024315.

It is not an unprimeable number, because it can be changed into a prime (28024319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (2330766).

Almost surely, 2^28024315 is an apocalyptic number.

28024315 is a deficient number, since it is larger than the sum of its proper divisors (9267941).

28024315 is a wasteful number, since it uses less digits than its factorization.

28024315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8430.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28024315 is about 5293.7996750916. The cubic root of 28024315 is about 303.7467701622.

Adding to 28024315 its reverse (51342082), we get a palindrome (79366397).

It can be divided in two parts, 2802 and 4315, that added together give a palindrome (7117).

The spelling of 28024315 in words is "twenty-eight million, twenty-four thousand, three hundred fifteen".